Home / 384,380.06-576,376.52-128,121.89

Finding the Fourth Proportional to 384,380.06, 576,376.52 and 128,121.89

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Solution

The fourth proportional to 384,380.06, 576,376.52 and 128,121.89 is: 192,118.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,380.06 : 576,376.52 = 128,121.89 : x
  2. Step 2: Convert to fraction form
    384,380.06/576,376.52 = 128,121.89/x
  3. Step 3: Cross multiply
    384,380.06x = 576,376.52 × 128,121.89
  4. Step 4: Simplify right side
    384,380.06x = 73,846,445,571.53
  5. Step 5: Solve for x
    x = 73,846,445,571.53/384,380.06
  6. Step 6: Final answer
    x = 192,118.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.